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One of the big advantages of Lithium Batteries over nickel metal hydride is that there is more room for improvement with the Lithium models.

A team in South Korea has “developed a nanoporous silicon electrode that could at least double the charge capacity of a lithium battery–essentially doubling the range of an electric vehicle. And unlike previously reported silicon anodes, the one created by Cho’s team can charge and discharge rapidly.”

The charging part is important. Current plug in cars have eight hour plus charge times when plugged into standard current.